在轮片或夹板上铣花纹
Snails have been eating our lettuces. 蜗牛一直在吃我们的莴苣。
The snail retreated into its shell. 蜗牛缩进壳里去了。
I cannot overcome my repugnance to eating snails. 吃蜗牛真恶心，我可受不了。
